Lawn sprinkler



March 5, 1935. Q E. UNDBERG 1,993,011

LAWN SPRINKLER Filed Nov. 1, 1933 amen Mot CariLmdberg Patented Mar. 5, 1935 v I 1,993,011 a LAWN SPRINKLER c n Lindberg, Silverdale, Wash. Application November 1, 1933, Serial No. 696,198

e olaims. -(01. 293-126) UNITED STATES PATENT OFFICE My invention relates to lawn sprinklers or the mally this aperture faces upward, but as shown in like, and in particular to that type of sprinkler Figure 2, the sleeve'20 may be rotated upon the wherein the water is distributed by a member nipple 21, so that the aperture 23 may face atany which is rotated by the action of the water angle between the vertical and the horizontal in emitted. a given vertical plane. 1 A stop pin 26 engaging the 5 i It is an object of my invention to provide a shoulders 27 and 28 limits the possible rotation of device which can be quickly and easily adjusted the sleeve on the nipple. in different ways, independently or jointly, for the Disposed adjacentto the aperture 23 is the purpose of regulating the lateral distribution of spinner 3 which is rotated by the stream of water the water, whereby one sprinkler may be adapted ejected from the aperture and operates to disfor use under varying conditions, particularly tribute the water during its rotation. The spinwith regard to adjacency to objects or areas it is ner includes two wings 30 and 31 which, as shown, not desired to water. form oppositelyv disposed troughs projecting up- A further object of my invention is to provide wardly andoutwardly; and curving backward so a sprinkler which will operate on very low presthat the water will exert a driving effect on the 15 sure. spinner. The lower part of the spinner defines 2. Also an object of my invention is to provide knife edge 32 which divides into two parts the means for dividing the stream of water so that its water stream issuing from the aperture 23, and force will be best expended to throw the water as which merges immediately into the curvature of far as possible, when it is desired to water a large the wings. 20 area. Extending outward and then upward from the Still another object is to shape the various parts base 2 is a bracket 4 which is streamlined in secso that they will offer the least possible intertion to obstruct the distribution of the water to ference with the distribution of the water. the smallest possible degree. As shown the brack- It is also my object to provide a mechanism et 4 is curved so that its upper end lies above the 25 of simple construction and having few parts; one aperture 23 when it is facing upward. In the upwhich will not easily get out of order and the parts per end of this bracket is disposed a hole 40 withof which are subject to little wear during operain which is received a rod 5. This rod seats in a tion of the sprinkler. socket 33 in the upper part of the spinner 3, to

My invention comprises the novel parts and act as the spinner bearing and its sole support. 30 arrangement, a preferred form of which is illus- A screw 41 threaded in the bracket 4 may be trated in the drawing and described in the speciscrewed in to clamp the rod 5 in any desired fication. My invention may, however, take other position.

forms not illustrated, within the scope of the ap- When water is delivered through the aperture 35 pended claims. 23 it strikes against the spinner 3, raising its 35 Figure 1 is a front elevation of my sprinkler in knife edge 32 slightly from contact with the base the form now preferred by me. 2 and lifting it until the bearing rod 5 engages FigureZisaside elevation, illustrating one manthe end of the bearing socket or seat 33. The ner in which my sprinkler may be adjusted to knife edge 32 still lies very close to the outlet change the water distribution. orifice, and divides the stream of water, each of 40 Figure 3 is a sectional view taken on the line which divisions, following up the wings 30 and 31 33 of Figure 4. respectively, produces a torque on the spinner to Figure 4 is a sectional view taken on the line rotate it, and by this action to distribute the 44 of Figure 3, showing the sprinkler adjusted water. to give a non-uniform water distribution. The rod may be slightly out of axial alignment 45 My sprinkler includes an elbow 1 which may be with the aperture 23. This may be accomplished supported on an upright pipe 10. The base, genin several ways, for instance, by bending it, if it erally indicated at 2, consists of a sleeve 20 rotatis made (as I prefer) of material which can be ably mounted on a closed-end nipple 21, and held easily bent. If it is desired to throw more water thereon by a washer 24 held in place by a screw on one side than on the opposite side the rod 50 25 received in the closed end of the nipple, in 5 may be bent slightly to displace the knife edge which nipple is cut a circumferential slot extend- 32 to a position eccentric of the delivery apering somewhat more than a quarter of the distance ture 23, as shown in Figure ,4. When positioned around its periphery. Cooperating with the slot in this manner it is obvious that the water stream 22 is a delivery aperture 23 in the sleeve 20. Norissuing from the aperture 23 will be dividedinto 55 two unequal parts, the larger stream being deflected to the right in Figure 4, and the smaller stream to the left. In this way more water may be distributed to one section than to another without disturbing the location of the sprinkler itself.

The plane of distribution as a whole may be changed if desired, as shown in Figure 2, in which case water would be thrown farther on two opposite sides of thesprinkler than on the other two opposite sides." By'combining this adjustment with bending of the rod 5, the sprinkler may be arranged to throw but little water downward (if any), thus avoidingwashing out lawn or soil immediately beneath it.

Whether or not the rod 5 is bent, it can be moved vertically, thus to space the knife edge 32 from the base 2 a more or less amountduring operation of the sprinkler, as desired. However, it is deemed preferable to keep the knife edge as close as possible tothe orifice, for this will divide it before any appreciable dispersion occurs, and the sprinklerwill then operate on extremely low pressure heads.

What I claim as my invention is:

l. A sprinkler comprising a'peripherally slotted nipple adapted for connection to a water supply source, an apertured sleeve rotatably mounted and having an internal groove communicating with the nipples slot and with said aperture, a spinner disposed, above said aperture, and a support for the spinner carried bysaid sleeve, whereby the aperture and the spinner may be adjusted angularly aboutthe nipple by rotation of the sleeve.

2. A sprinkler comprising a base having a delivery aperture therein, a spinner having a straight knife edge disposed to rest upon the base and extending across said aperture, and in operation dividing the water stream issuing therefrom, to be supported by such stream, a bracket integral with and extending upward from said base, a bearing rod supported from the bracket, engaging said spinner from above to limit its movement upward from the base and aperture, and to maintain it in registry with'the issuing stream, and means for adjusting said bearing rod vertically with respect to said bracket, to space said knife edge closer to or farther from said aperture during operation of the sprinkler.

3. A sprinkler comprising a base having a delivery aperture therein, a spinner having a straight knife edge adjacent to said aperture, in operation floating upon and supported by the water stream issuing therefrom, to divide and to disperse such water stream, and bearing means engaging said spinner. from the side opposite said knife edge to limit lateral and endwise movement thereof.

4. A sprinkler comprising a base having a delivery aperture therein, a spinner having a straight knife edge. disposed above said aperture and supported thereby when no water is flowing from said aperture, and adapted to be raised, spaced from said aperture, and rotated by a stream of water issuingtherefrom, to divide and disperse such water stream, means engaging said spinner to limit lateral and endwise movement thereof, and means for adjusting said first means to vary the limits of spinner movement.

CARL E. LINDBERG. 

